18827600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^2\times {\mathrm{389}}^1$

素因数の和:429

約数の個数: 90

約数和(自身を含む): 49847070

約数和(自身を除く): 31019470

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 121, 176, 200, 220, 242, 275, 389, 400, 440, 484, 550, 605, 778, 880, 968, 1100, 1210, 1556, 1936, 1945, 2200, 2420, 3025, 3112, 3890, 4279, 4400, 4840, 6050, 6224, 7780, 8558, 9680, 9725, 12100, 15560, 17116, 19450, 21395, 24200, 31120, 34232, 38900, 42790, 47069, 48400, 68464, 77800, 85580, 94138, 106975, 155600, 171160, 188276, 213950, 235345, 342320, 376552, 427900, 470690, 753104, 855800, 941380, 1176725, 1711600, 1882760, 2353450, 3765520, 4706900, 9413800, 18827600]

約数ペア:

[(1, 18827600), (2, 9413800), (4, 4706900), (5, 3765520), (8, 2353450), (10, 1882760), (11, 1711600), (16, 1176725), (20, 941380), (22, 855800), (25, 753104), (40, 470690), (44, 427900), (50, 376552), (55, 342320), (80, 235345), (88, 213950), (100, 188276), (110, 171160), (121, 155600), (176, 106975), (200, 94138), (220, 85580), (242, 77800), (275, 68464), (389, 48400), (400, 47069), (440, 42790), (484, 38900), (550, 34232), (605, 31120), (778, 24200), (880, 21395), (968, 19450), (1100, 17116), (1210, 15560), (1556, 12100), (1936, 9725), (1945, 9680), (2200, 8558), (2420, 7780), (3025, 6224), (3112, 6050), (3890, 4840), (4279, 4400)]